If you like the sound of Royal Blood then check out Aussie band The Mess Hall. One guitarist , one drummer - loud as fark. What more do you need? Occasionally a keyboardist gets dragged along for live shows.
I never realised how much of a Bowie fan I was until his untimely passing. Damn he has some good stuff and that is not including the obvious stuff - how about Sound and Vision and Strangers When We Meet for great tunes!